356 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 



material has afforded only detached segments and we are not certain 

 that they have lived at the place where they were collected. 



In the Mediterranean, according to Calvet (1902) this species 

 is frequently fixed to the rhizomes of Posidonia. Although it has been 

 dredged at Corse in depths of 40 to 60 meters, it is not rare in the sand 

 of the shores in the vicinity of Ajaccio where certainly it did not live. 

 Our specimens were dead and we have sectioned one which was ovi- 

 celled. The occurrence of this variety is as follows: 

 Occurrence. — 



D. 5137. Jolo Light, Jolo; 6° 04' 25" N.; 120° 58' 30" E.; 20 



fathoms; S. Sh. 

 D. 5141. Jolo Light, Jolo; 6° 09' N. ; 120° 58' E.; 29 fathoms; co. S. 



D. 5147. Sulade Island, Sulu Archi- 

 pelago ; 5° 41' 40" N. ; 120° 47' 10" E. ; 

 21 fathoms; co. S. Sh. 

 D. 5151. Sirun Island, Sulu Archi- 

 pelago; 5° 24' 40" N. ; 120° 27' 15" E. ; 

 24 fathoms; co. S., Sh. 

 D. 5162. Tinagta Island, Tawi Tawi 

 Group; 5° 10' N.; 119° 47' 30" E.; 

 230 fathoms; S. brk., Sh., crs. 

 D. 5577. Mount Dromedario, Tawi 

 Tawi; 5° 20' 36" N.; 119° 58' 51" E.; 

 240 fathoms; crs. S.; 12.4° C. 

 Geographic distribution (species). — Atlan- 

 tic: Saint Paul Rocks and John Adam Bank. 

 Mediterranean: Cette; Nice, 45 meters; 

 Bonifacio, 55-77 m.; Bastia, Pietranera, 

 Saint Florent, 40-60 m. and shores in the 

 vicinity of Ajaccio at Corse; Banyuls and 

 Palavas;. Naples, Adriatic, Aegean Sea; 

 Shubuk, Red Sea. Indian Ocean : Port Eliza- 

 beth, South Africa; Manaar, Andamans, 

 India, 20 fathoms. Pacific: China Sea, Cape 

 Tizard, 27 fathoms; Loyalty Islands; Torres Straits, Murray Islands, 

 15-20 fathoms; Queensland, New South Wales, Victoria and the south 

 of Australia; Tasmania. Waters, 1907, cites also Madeira and the 

 Cape Verde Islands but we have not found confirmation of this in the 

 special works of that author on the localities. 



Geologic distribution. — Miocene (Helvetian) of Touraine (Canu); 

 Egypt (Canu); Tortonian of Austria-Hungary (Reuss); Miocene of 

 Australia (MacGillivary); Pliocene (Zanclean) of Italy (Seguenza); 

 Sahelian of Oran (Canu); Plaisancian of Italy (Manzoni); Astian of 

 Italy (Seguenza, Neviani); Sicilian of Italy (Neviani), and Rhodes 

 (Pergens); Quaternary of Italy (Seguenza). 

 Cotypes— Cat. No. 8137, U.S.N.M. 



Fig. 140.— Genus Tubucel- 

 laria D'Orbigny, 1852 



A. Longitudinal section 

 of T. cereoides gracilis, new 

 variety, X 16, through an 

 ovicelled fragment. B. 

 Longitudinal section 

 through the basal part of a 

 segment of T. fusiformis 

 D'Orbigny, 1848. 



